forked from luck/tmp_suning_uos_patched
aab2d4086a
On some EHCI usb debug controllers, the EHCI debug device will fail to be seen after a port reset, after a warm reset. Two options exist to get the device to initialize correctly. Option 1 is to unplug and plug in the device. Option 2 is to use the EHCI port test to get the usb debug device to start talking again. At that point the debug controller port reset will succeed. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> CC: dbrownell@users.sourceforge.net Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
196 lines
7.5 KiB
C
196 lines
7.5 KiB
C
/*
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* Copyright (c) 2001-2002 by David Brownell
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __LINUX_USB_EHCI_DEF_H
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#define __LINUX_USB_EHCI_DEF_H
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/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
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/* Section 2.2 Host Controller Capability Registers */
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struct ehci_caps {
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/* these fields are specified as 8 and 16 bit registers,
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* but some hosts can't perform 8 or 16 bit PCI accesses.
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*/
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u32 hc_capbase;
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#define HC_LENGTH(p) (((p)>>00)&0x00ff) /* bits 7:0 */
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#define HC_VERSION(p) (((p)>>16)&0xffff) /* bits 31:16 */
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u32 hcs_params; /* HCSPARAMS - offset 0x4 */
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#define HCS_DEBUG_PORT(p) (((p)>>20)&0xf) /* bits 23:20, debug port? */
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#define HCS_INDICATOR(p) ((p)&(1 << 16)) /* true: has port indicators */
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#define HCS_N_CC(p) (((p)>>12)&0xf) /* bits 15:12, #companion HCs */
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#define HCS_N_PCC(p) (((p)>>8)&0xf) /* bits 11:8, ports per CC */
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#define HCS_PORTROUTED(p) ((p)&(1 << 7)) /* true: port routing */
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#define HCS_PPC(p) ((p)&(1 << 4)) /* true: port power control */
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#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
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u32 hcc_params; /* HCCPARAMS - offset 0x8 */
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#define HCC_EXT_CAPS(p) (((p)>>8)&0xff) /* for pci extended caps */
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#define HCC_ISOC_CACHE(p) ((p)&(1 << 7)) /* true: can cache isoc frame */
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#define HCC_ISOC_THRES(p) (((p)>>4)&0x7) /* bits 6:4, uframes cached */
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#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */
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#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/
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#define HCC_64BIT_ADDR(p) ((p)&(1)) /* true: can use 64-bit addr */
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u8 portroute [8]; /* nibbles for routing - offset 0xC */
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} __attribute__ ((packed));
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/* Section 2.3 Host Controller Operational Registers */
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struct ehci_regs {
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/* USBCMD: offset 0x00 */
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u32 command;
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/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
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#define CMD_PARK (1<<11) /* enable "park" on async qh */
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#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */
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#define CMD_LRESET (1<<7) /* partial reset (no ports, etc) */
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#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */
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#define CMD_ASE (1<<5) /* async schedule enable */
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#define CMD_PSE (1<<4) /* periodic schedule enable */
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/* 3:2 is periodic frame list size */
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#define CMD_RESET (1<<1) /* reset HC not bus */
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#define CMD_RUN (1<<0) /* start/stop HC */
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/* USBSTS: offset 0x04 */
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u32 status;
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#define STS_ASS (1<<15) /* Async Schedule Status */
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#define STS_PSS (1<<14) /* Periodic Schedule Status */
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#define STS_RECL (1<<13) /* Reclamation */
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#define STS_HALT (1<<12) /* Not running (any reason) */
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/* some bits reserved */
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/* these STS_* flags are also intr_enable bits (USBINTR) */
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#define STS_IAA (1<<5) /* Interrupted on async advance */
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#define STS_FATAL (1<<4) /* such as some PCI access errors */
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#define STS_FLR (1<<3) /* frame list rolled over */
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#define STS_PCD (1<<2) /* port change detect */
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#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */
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#define STS_INT (1<<0) /* "normal" completion (short, ...) */
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/* USBINTR: offset 0x08 */
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u32 intr_enable;
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/* FRINDEX: offset 0x0C */
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u32 frame_index; /* current microframe number */
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/* CTRLDSSEGMENT: offset 0x10 */
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u32 segment; /* address bits 63:32 if needed */
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/* PERIODICLISTBASE: offset 0x14 */
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u32 frame_list; /* points to periodic list */
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/* ASYNCLISTADDR: offset 0x18 */
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u32 async_next; /* address of next async queue head */
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u32 reserved [9];
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/* CONFIGFLAG: offset 0x40 */
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u32 configured_flag;
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#define FLAG_CF (1<<0) /* true: we'll support "high speed" */
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/* PORTSC: offset 0x44 */
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u32 port_status [0]; /* up to N_PORTS */
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/* 31:23 reserved */
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#define PORT_WKOC_E (1<<22) /* wake on overcurrent (enable) */
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#define PORT_WKDISC_E (1<<21) /* wake on disconnect (enable) */
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#define PORT_WKCONN_E (1<<20) /* wake on connect (enable) */
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/* 19:16 for port testing */
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#define PORT_TEST_PKT (0x4<<16) /* Port Test Control - packet test */
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#define PORT_LED_OFF (0<<14)
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#define PORT_LED_AMBER (1<<14)
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#define PORT_LED_GREEN (2<<14)
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#define PORT_LED_MASK (3<<14)
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#define PORT_OWNER (1<<13) /* true: companion hc owns this port */
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#define PORT_POWER (1<<12) /* true: has power (see PPC) */
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#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */
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/* 11:10 for detecting lowspeed devices (reset vs release ownership) */
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/* 9 reserved */
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#define PORT_RESET (1<<8) /* reset port */
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#define PORT_SUSPEND (1<<7) /* suspend port */
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#define PORT_RESUME (1<<6) /* resume it */
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#define PORT_OCC (1<<5) /* over current change */
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#define PORT_OC (1<<4) /* over current active */
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#define PORT_PEC (1<<3) /* port enable change */
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#define PORT_PE (1<<2) /* port enable */
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#define PORT_CSC (1<<1) /* connect status change */
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#define PORT_CONNECT (1<<0) /* device connected */
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#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_OCC)
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} __attribute__ ((packed));
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#define USBMODE 0x68 /* USB Device mode */
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#define USBMODE_SDIS (1<<3) /* Stream disable */
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#define USBMODE_BE (1<<2) /* BE/LE endianness select */
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#define USBMODE_CM_HC (3<<0) /* host controller mode */
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#define USBMODE_CM_IDLE (0<<0) /* idle state */
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/* Moorestown has some non-standard registers, partially due to the fact that
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* its EHCI controller has both TT and LPM support. HOSTPCx are extentions to
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* PORTSCx
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*/
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#define HOSTPC0 0x84 /* HOSTPC extension */
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#define HOSTPC_PHCD (1<<22) /* Phy clock disable */
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#define HOSTPC_PSPD (3<<25) /* Port speed detection */
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#define USBMODE_EX 0xc8 /* USB Device mode extension */
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#define USBMODE_EX_VBPS (1<<5) /* VBus Power Select On */
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#define USBMODE_EX_HC (3<<0) /* host controller mode */
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#define TXFILLTUNING 0x24 /* TX FIFO Tuning register */
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#define TXFIFO_DEFAULT (8<<16) /* FIFO burst threshold 8 */
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/* Appendix C, Debug port ... intended for use with special "debug devices"
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* that can help if there's no serial console. (nonstandard enumeration.)
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*/
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struct ehci_dbg_port {
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u32 control;
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#define DBGP_OWNER (1<<30)
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#define DBGP_ENABLED (1<<28)
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#define DBGP_DONE (1<<16)
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#define DBGP_INUSE (1<<10)
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#define DBGP_ERRCODE(x) (((x)>>7)&0x07)
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# define DBGP_ERR_BAD 1
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# define DBGP_ERR_SIGNAL 2
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#define DBGP_ERROR (1<<6)
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#define DBGP_GO (1<<5)
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#define DBGP_OUT (1<<4)
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#define DBGP_LEN(x) (((x)>>0)&0x0f)
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u32 pids;
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#define DBGP_PID_GET(x) (((x)>>16)&0xff)
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#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
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u32 data03;
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u32 data47;
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u32 address;
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#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep))
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} __attribute__ ((packed));
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#ifdef CONFIG_EARLY_PRINTK_DBGP
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#include <linux/init.h>
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extern int __init early_dbgp_init(char *s);
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extern struct console early_dbgp_console;
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#endif /* CONFIG_EARLY_PRINTK_DBGP */
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#ifdef CONFIG_EARLY_PRINTK_DBGP
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/* Call backs from ehci host driver to ehci debug driver */
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extern int dbgp_external_startup(void);
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extern int dbgp_reset_prep(void);
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#else
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static inline int dbgp_reset_prep(void)
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{
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return 1;
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}
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static inline int dbgp_external_startup(void)
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{
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return -1;
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}
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#endif
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#endif /* __LINUX_USB_EHCI_DEF_H */
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